A hydrocarbon oil desulfurization catalyst and its preparation method and method for hydrocarbon oil desulfurization
A desulfurization catalyst and hydrocarbon oil technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as poor wear resistance, unstable structure, and low desulfurization activity, and achieve the goal of using Long life, good wear resistance, low catalyst loss effect
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[0031] The present invention also provides a preparation method of the hydrocarbon oil desulfurization catalyst of the present invention, the method comprising: (1) mixing a zirconium dioxide binder, water and an acidic liquid to obtain a zirconium sol; (2) mixing the zirconium sol, Silicon nitride, at least one metal oxide selected from group IIB, VB and VIB group elements, and water are mixed, and the mixed carrier slurry is formed, first dried, and first calcined to obtain a carrier; (3) in the Introduce the precursor of the metal promoter into the carrier, and then carry out the second drying and the second roasting to obtain the catalyst precursor; (4) reduce the catalyst precursor in a hydrogen atmosphere to obtain the hydrocarbon oil desulfurization catalyst.
[0032] In the preparation method step (2) of the hydrocarbon oil desulfurization catalyst provided by the present invention, the addition of the metal oxide may be in the form of powder of the metal oxide, or the ...
Embodiment 1
[0058] This example is used to illustrate the method for preparing a hydrocarbon oil desulfurization catalyst of the present invention.
[0059] (1) Prepare the carrier. 2.60kg of zirconium tetrachloride (Beijing chemical plant, analytically pure, 99% by weight) was slowly added to 5.0kg of deionized water, and 4.6kg of 5% by weight of nitric acid solution was added, and slowly stirred to avoid the precipitation of zirconia crystals to obtain Light yellow transparent zirconium sol pH=2.1;
[0060]4.43kg of zinc oxide powder (Headhorse company, purity 99.7% by weight), 2.40kg of silicon nitride (purity>99.0% by weight, Qinhuangdao Yinuo High-tech Material Development Co., Ltd.) and 6.57kg of deionized water were mixed and stirred for 30 After 10 minutes, a mixed slurry of zinc oxide and silicon nitride was obtained; then the above-mentioned zirconium sol was added, mixed and stirred for 1 hour to obtain a carrier slurry;
[0061] The carrier slurry was used in Niro Bowen Nozz...
Embodiment 2
[0066] This example is used to illustrate the method for preparing a hydrocarbon oil desulfurization catalyst of the present invention.
[0067] Get zirconium oxychloride 1.72kg (Aldrich company, analytically pure, 99% by weight) and join in the deionized water of 3.2kg and the hydrochloric acid of 10% by weight of 3.0kg (chemically pure, produced by Beijing Chemical Plant), pH=1.9, Stir the reaction for 1h to obtain a light yellow transparent zirconium sol;
[0068] Mix 1.80 kg of silicon nitride, 5.52 kg of zinc oxide powder and 10.0 kg of deionized water under stirring to obtain a mixed slurry of zinc oxide and silicon nitride, then add the above zirconium sol and stir for 1 h to obtain a carrier slurry;
[0069] Referring to the method of Example 1, the carrier slurry was spray-dried and shaped, and the active component nickel was introduced, and the hydrocarbon oil desulfurization catalyst A2 was obtained after reduction.
[0070] The chemical composition of A2 is: the c...
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